Quiz 5, Math 1060—003
October 4, 2013
You have 10 minutes to complete this quiz. No calculators, notes, books, etc. are
allowed. Show your work, and place your final answer in the boxes provided.
Name:
ilL I ‘iIit
‘/J
uNID:
1. (3 points) Evaluate the following expressions:
a)
arcsin(1/2)
b) cos’
c)
(—v/2)
arctan(—
)
1
v
—1
-‘ii
[o,vj
ta’(’
1.
(-!r,F
2
a)
b)
=-rrJ
c)
2. (1 point) Find the exact value of sin (arctan(3/4)). Your answer should be a number and
should involve any inverse trig functions.
1
erc(/)
)
e__it
1V
—?
2
e/j
3/5
2.
3. (1
point)
x
Assume that 0
‘/2.
Write the following as an algebraic expression in x:
tan(arccos 2x).
Your answer should not involve any inverse trig functions.
earcc
2
—
C2Xi
(,()a
b
av(crccOs 2r)=
2X
2—
4
3.
TT-4